/* Header-specific styles for SOCIETE DE REALISATION DE TRAVAUX ELECTRIQUES */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-height);
  backdrop-filter: blur(18px);
  background: linear-gradient(to bottom, rgba(7, 11, 18, 0.98), rgba(7, 11, 18, 0.9));
  border-bottom: 1px solid rgba(148, 163, 184, 0.35);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.site-header__brand {
  display: inline-flex;
  align-items: baseline;
  gap: 0.35rem;
  font-family: var(--font-display);
  font-size: var(--font-size-lg);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text);
}

.site-header__brand-main {
  opacity: 0.9;
}

.site-header__brand-accent {
  color: var(--color-accent-gold);
}

.site-header__nav {
  display: flex;
  align-items: center;
  gap: var(--space-10);
}

.site-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  list-style: none;
}

.site-header__nav-link {
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-text-muted);
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
  transition: color var(--transition-base), border-color var(--transition-base);
}

.site-header__nav-link:hover,
.site-header__nav-link:focus-visible {
  color: var(--color-text);
  border-color: var(--color-primary);
}

.site-header__cta-wrapper {
  display: flex;
  align-items: center;
}

.site-header__cta {
  font-size: var(--font-size-xs);
  padding-inline: 1.25rem;
}

.site-header__cta-icon {
  display: inline-flex;
}

.site-header__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 4px;
  width: 40px;
  height: 40px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.6);
  background: rgba(15, 23, 42, 0.9);
  color: var(--color-text);
}

.site-header__toggle-bar {
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: var(--color-text);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

/* Mobile layout */
@media (max-width: 900px) {
  .site-header__toggle {
    display: inline-flex;
  }

  .site-header__nav {
    position: fixed;
    inset: var(--nav-height) 0 auto 0;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-8);
    padding: var(--space-12) var(--space-8) var(--space-16);
    background: radial-gradient(circle at top, rgba(15, 23, 42, 0.98), rgba(3, 7, 18, 0.98));
    border-bottom: 1px solid rgba(148, 163, 184, 0.35);
  }

  .site-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
  }

  .site-header__nav-link {
    font-size: var(--font-size-base);
  }

  .site-header__cta-wrapper {
    width: 100%;
    margin-top: var(--space-4);
  }

  .site-header__cta {
    width: 100%;
    justify-content: center;
  }

  .site-header__nav--open {
    display: flex;
  }

  .site-header__toggle--open .site-header__toggle-bar:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }

  .site-header__toggle--open .site-header__toggle-bar:nth-child(2) {
    opacity: 0;
  }

  .site-header__toggle--open .site-header__toggle-bar:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .site-header__toggle-bar {
    transition: none;
  }
}